Simon
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| posted on 30/12/07 at 07:30 PM |
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MAP where to put?
Chaps,
Am in the process of getting all the bits and pieces into the engine bay for the Emerald, and have come to the MAP sensor.
How close to the plenum does it have to be?
Within an inch, or will on the bulkhead be fine (<18" .
Cheers very much
ATB
Simon
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onzarob
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| posted on 30/12/07 at 07:35 PM |
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On an Audi Desiel the MAP sensor is half way betwwen the airbox and the header.
I suppose it the best place for an average reading of boost pressure
ps, its before the intercooler
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matt_claydon
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| posted on 30/12/07 at 07:42 PM |
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Doesn't really matter. Most people with MS have it much further than that as the MAP sensor is in the ECU.
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mark chandler
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| posted on 30/12/07 at 08:30 PM |
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XJS jag, ECU in the boot, rubber pipe all the way along the car, it does not matter in the real world.
IMHO longer would be better as it helps damp the pulses, I'm sure that some bikes even have an air reservoir where the MAP sensor sits under the
throttle bodies to achieve this.
Cheers Mark
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Simon
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| posted on 30/12/07 at 09:35 PM |
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Cheers chaps
Mounted to scuttle. In a nice awkward place!
ATB
Simon
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lsdweb
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| posted on 30/12/07 at 11:33 PM |
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Hi Simon
You may not even need it with the Emerald!
You can use a TPS instead (awaiting the debate on MAP versus TPS!)
Regards
Wyn
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sebastiaan
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| posted on 31/12/07 at 11:13 AM |
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Simon's building a turbocharged engine, so TPS is not a good indicator of engine load.
On the bulhead will be fine, and basically you do not need pulsation damping if you measure MAP at a fixed crank angle every engine cycle.
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lsdweb
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| posted on 31/12/07 at 07:20 PM |
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quote:
Simon's building a turbocharged engine
I hadn't spotted that - I'll get my coat!
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Simon
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| posted on 1/1/08 at 02:10 AM |
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Got a throttle position switch (which I modified and half attached this evening - I managed to lose one of the two screws I bought today!) and the MAP
sensor, along with air temp, water temp etc etc.
Wiring of loom is now mostly done, just a little tweaking, then wrap it up
Thanks for the additional input, though.
ATB
Simon
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sebastiaan
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| posted on 17/1/08 at 04:51 PM |
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Just a quick reminder: make sure the ECU is mounted such that it is not the lowest point in the system and that the connection is (if possible)
pointing downwards. If you don't any condensation in the line will get into the MAP sensor, causing a great big mess when it gets below the
freezing point...
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MB CUSTOMS
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| posted on 18/1/08 at 06:11 AM |
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It is not where the map sensor is mounted it is where you take the signal from that is the important bit.
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